1 files changed, 36 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/ext/std/ratio/to.cpp b/src/boost/libs/hana/test/ext/std/ratio/to.cpp
new file mode 100644
index 000000000..2795c990a
--- /dev/null
+++ b/src/boost/libs/hana/test/ext/std/ratio/to.cpp
@@ -0,0 +1,36 @@
+// Copyright Louis Dionne 2013-2017
+// Distributed under the Boost Software License, Version 1.0.
+// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
+
+#include <boost/hana/assert.hpp>
+#include <boost/hana/core/to.hpp>
+#include <boost/hana/equal.hpp>
+#include <boost/hana/ext/std/ratio.hpp>
+
+#include <laws/base.hpp>
+#include <support/cnumeric.hpp>
+
+#include <ratio>
+#include <utility>
+namespace hana = boost::hana;
+
+
+int main() {
+    // Conversion from a Constant to a std::ratio
+    {
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(
+            hana::to<hana::ext::std::ratio_tag>(cnumeric<int, 0>),
+            std::ratio<0>{}
+        ));
+
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(
+            hana::to<hana::ext::std::ratio_tag>(cnumeric<int, 1>),
+            std::ratio<1>{}
+        ));
+
+        BOOST_HANA_CONSTANT_CHECK(hana::equal(
+            hana::to<hana::ext::std::ratio_tag>(cnumeric<int, 3>),
+            std::ratio<3>{}
+        ));
+    }
+}